Yeastar VoIP PBX and Telephony Systems

Supercharging your business with unrivaled unified communications and the best in enterprise-level technology.
Yeastar’s speciality lies in developing and manufacturing IP-PBX and VoIP gateways. They are committed to the distribution of new generation technology products in the enterprise communications field while providing cost-efficient solutions for ITSP.

Yeastar’s dedication to designing and deploying cutting edge IP solutions worldwide has lead it to being recognised in the VoIP industry for their innovative and high-performance networking products.

Communications Made Easy

Trusted by over 200,000 customers for 13 years, Yeastar PBX Phone System puts all the ways you need to communicate in one place, enabling you to connect with your team with all-inclusive features, at a lightning-fast pace.

Yeastar K2 Large Capacity IP-PBX for Enterprises

Yeastar K2 and K2 Lite are large capacity pure IP-PBX designed for medium and large enterprises and support respectively up to 2000 users and 1000 users. Engineered for the communications needs of today and tomorrow, Yeastar K2 and K2 Lite deliver rich enterprise-level features with exceptional reliability, and meet mobile workers’ needs with Linkus UC Softphone. The pure IP telephone system can easily add Yeastar Gateways for FXS, FXO, GSM, WCDMA, ISDN BRI, and E1/T1/PRI ports.

All-inclusive Features

The fully-fledged enterprise telephone system offers a complete range of business-enhancing
features to handle everything you ask for a communication system and streamlines your operations.
Advanced features like call recording and conferencing don’t require any extra license fees.

Auto Provision

Get your IP phones set up easily with Auto Provision feature. Auto Provision automatically detects
phones from Yealink, Cisco, Polycom, Snom, Alcatel, Panasonic, Htek, and Fanvil and helps you
configure batch IP phones. Yeastar FXS VoIP Gateway can also be automatically added and
configured in the Web GUI.


Employees on the go will benefit from a number of mobility features. Call forwarding, mobility
extension, Linkus Mobile Client app on your cell phone, and more ensure that you are connected to
the telephone system and your customer anywhere anytime.


Two Yeastar K2 systems, or K2 Lite systems, can create a highly available system for enterprises to
prevent the unnecessary business loss caused by unexpected server failure. The failover happens
immediately, so callers can still reach the people they need and business can continue as usual.


Backed by high-end CPU processor, Yeastar K2 and K2 Lite bring stable performance, robust quality,
and future communication demand together with one reliable enterprise telephone system.

Easy Management

An intuitive Web-based GUI gives administrator full control of the system and also provides each user
with Web-based user portal to allow easy access to their call history, call recordings, voicemails, and
configure their personalize settings.

Yeastar S-Series VoIP PBX

Yeastar S-Series VoIP PBX offers a scalable solution that is easy to install and manage and that has been built to provide the ultimate performance quality. Targeted for small and medium size enterprises, the Yeastar S-series PBX can support a range of 20 to 300 users and 10 to 60 concurrent calls. 

Future proof your business and your investment with the S-series PBX; built to meet all of your current communications needs, but also built with a modular design that is highly flexible. The S-series is easy to install with plug and play connectivity and auto provisioning options. It also has Metro UI driven by point and click configuration. Better yet, the S-series offers advanced failover protection as well as monitoring and reporting capabilities. 

  • The S-Series PBX can be configured with any of the telephony interfaces below.  The S20 supports 2 modules without expansion boards, S50 supports 4 modules without expansion boards, S100 supports 8 modules=2 expansion cards, and S300 supports 12 modules=3 expansion cards.
  • One Expansion card can support 4 modules. On S100 and S300, you must install expansion boards if you want to add modules or PRI port.
  • The S100 and S300 support the D30 module to add 100 users and 30 calls.

Telephony Modules:

S2 Module has 2 FXS PortsO2 Module has 2 FXO PortsSO Module has 1 FXS Port and 1 FXO PortB2 Module has 2 BRI Ports GSM Module has 1 GSM Channel. Frequency: 850/900/1800/1900 MHz (quad-band)3G Module has 1 WCDMA Channel. Frequency: 900/2100 MHz, 850/2100 MHz, 850/1900 MHz